Rzr 800 rear diff failure and the fix

2014 rzr 800 rear diff exploded :) apparently the pinion nut comes loose.. video shows how to take it all apart.
Oh and I called the rear diff an axle by mistake.
Job took about 4 ish hours and cost 2100$ in parts. There's a video of guy showing how to tighten the pinion nut, do that if yours hasn't blown up.